Frederick w



(No Model.)

P. W. MOUNT. ELECTRIC SWITGHBOARD.

r-Mp J ige C@ if@ UNITED STATES yPATENT Fries..

FREDERICK lV. MOUNT, OF ST. JOHN, CANADA.

ELECTRIC SWITCH BOARD.

SPECIFICATION forming part of Letters Patent No. 504,738, datedSeptember 12, 1893.

Application filed April 5, 1893. Serial No. 469,222. (No model.)

To all whom it may concern:

Be it known that I, FREDERICK W. MOUNT, of St. John, in the Province ofNew Brunswick, in the Dominion of Canada, have invented certain new anduseful Improvements in Electric-Circuit Switchboards; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, in whichyFigure l, is an elevation of my improved switchboard. Fig. 2, is asection of the same on line XXto show the connectors. Fig. 3, is

a plan or top view of one of the connectors enlarged. Fig. 4, is a sideelevation of the same, and, Fig. 5, is a top and side view of the clipsconnected by a cable, forming aconnector for cutting in or out acircuit.

My invention relates to a switch-board or frame for electric arc lightstations, and has for its object to switch the terminals of the dynamowires with the terminals of the circuit wires by means of crossed wiresor rods offset at their intersection and connected at their intersectionby a connector, whereby one dynamo may be connected to two circuits orone circuit to one dynamo or other relative adjustment, and my inventionconsists of a rectangular frame having vertical and horizontal rodsoffset at their intersections, the vertical or one set of rodsconnecting with the terminals of the circuits, and the horizontal orother set of rods connecting with the terminals from the dynamos, orvice versa, and a connector or clip to connect any two intersecting rodsto make the circuit or circuits complete; also in a cable having clipterminals to connect two rods while the switch con? nection is beingmade.

Referring to the drawingsMA, is a rectangular frame of wood or othersuitable material, which frame if desired, may be strengthened at thecorners by braces A.

B, are metal rods or tubes passing through opposite sides of the frameA, and they are fastened at one end by nuts C, screwing on the endsagainst the outside of the frame, and by binding posts D, screwing onthe opposite end, and the binding posts D, receive the terminals of thewires E, from the dynames.

F, are metal rods or tubes oiiset about two inches from the rods B, atright angles thereto and pass through opposite sides of the frame A, andfastened securely at one end by nuts G, screwing against the outside ofsaid frame, and by binding posts H, screwing on the opposite end of therods, and said posts H, receive the terminals or terminations of thewire circuits J.

The symbol denotes the positive ends of the wires of the circuits andthe symbol the negative ends.

One end of the rods B, is connected by the binding posts to the negativeand positive ends of the wires E, from the dynamos, and the rods F, areconnected at one end by the binding posts H, to the negative andpositive terminals of the circuit wires J, whereby two circuits can beconnected to two dynamos, or two circuits to one dynamo, or a singlecircuit maintained with one, two or more dynamos by connection of therods B, and F, at the proper intersections by a connector K.

The connections 1, l, by the connectors K, indicate how connection ismade between a single dynamo and a single circuit. The four connections2, 2, 2, 2, indicate how connection is made from a dynamo to twodifferent circuits, the positive end of the wire being connected bymeans of the connector K, to the positive end of the circuit wire, andthe negative end of the dynamo wire being connected by the secondconnector K, to the negative end of the other circuit wire, the tworemaining ends of the two circuits being finally united by the third andfourth connectors K, at 2, 2, and a spare rod N, or rod out of circuit,thus completing the circuit. Any of the rods B, F, not in actual use maybe used as a spare rod to complete the circuit. The connectors K, whenplaced in the position indicated by the circles 3, 8, 3, 3, show how connection is made between two dynamos and a single circuit.

The foregoing three illustrations show the great number of combinationsof connections possible with this switch frame, and which need not bereferred to specifically, as they are obvious.

The connectors K, preferably consist of a U-shaped plate ll, having astem entering a handle l0, insulated therefrom, and to each leg of saidplate 11, top and bottom, is secured IOO one end of a fiat spring 12,which projects beyond the ends of said legs, and said springs areprovided with jaws 13, facing one another, which yield when forcedagainst a rod t0 bring said rod into contact with the ends or legs ofthe plate 11, the inner end of the jaws then clipping the rod.

14, 1a, are spring jaws opening parallel to the plate 11, or in ahorizontal direction, t0 admit the vertical rods F, and said jaws arepivoted to the plate 11, near the handle 10, and said jaws are providedwith cam or inclined faces 15, leading' to a cavity 16, which receivesthe rod F. The distance between the cavity 16, and the end of plate 11,corresponds to the distance the rods B, and F, are apart.

17, is a post secured to plate 11, near the handle, andsaid plate holdsa U -shaped sprin g 18, which keeps the jaws 14, closed against a rod F,to make the circuit complete after the spring has yielded to admit therod between the jaws.

Then itis desired to cutin, or cutout, different dynamos or circuits inreadjusting the connectors K, connection is made with a connector L,Fig. 5, which consists of an insulated piece of cable provided at bothends with a clip 22, which clip is such as described for one leg of theconnector K, said clips 22, catchingr on the rods B, F, intermediatelyof their intersections, as shown in Fig. 1.

To give a single illustration of the manner of using this connector L,supposing it is desired to cut out or disconnect the circuit marked 5,from the circuit marked et, which are connected together as shown inFig. 1, one end of the connector L, is snapped on rod F, at a, and theother end snapped on the rod B,'at l), which consequently short circuitsor cuts out circuit 5, the electric current then passing through thecable as oiering less resistance. This then permits the connectors K, at2, 2, 2, 2, to be safely removed to any other desired position, and whenthe connectors K, have been so placed, the cable connector L, isremoved.

I claim as my invention- 1. A switch-board or switch frame, having rodsF, connected at one end to the terminals of a metallic circuit orcircuits, rods B, connected at one end to the terminals of a dynamo ordynamos, said rods crossing the rods F, at a distance therefrom, sparerods N, corresponding to the rods B, and F, connectors K, gripping saidrods B, F, and N, to complete a circuit, and circuit cut out L,consisting of a cable having clips at both ends to grip the rods B, F,while adjusting the connectors K, as set forth.

2. A connector K, comprising a bifurcated or U-shaped plate 11, havingflat springs 12, provided with jaws 13, adapted to clip or grip a rodiuterveuingly, and spring jaws 14, pivoted to said plate, and adapted togrip a rod offset from the rod gripped by said jaws 13, and providedwith an insulated handle 10, substantially as set forth.

FREDERICK 1V. MOUNT.

Witnesses:

GEO. Il. EVANS, A. H. HANINGTON.

